Another high severity flaw was a use-after-free bug resulting in a potentially exploitable crash that could trigger when processing WebGL content.

The Windows version of Firefox suffers from a vulnerability related to the updater. An attacker could exploit this weakness to overwrite arbitrary files and even for privilege escalation if the targeted files are used by high-privileged Windows components.

Another high severity flaw that only affects the Windows version of Firefox is an out-of-bounds write related to the ANGLE graphics library that is used for WebGL content. Exploiting this vulnerability could result in a crash.